听力文本

The most likely explanation is probably that we are an accident.
最可能的解释就是，也许我们的存在只是一次意外
Just by chance, some molecules bumped into each other at random
机缘巧合下，一些分子随机地进入其他分子
until finally one formed that could copy itself.
直到最后组合了一个可以自我复制的个体
Then began the slow process of evolution
接着，缓慢的进化过程开始了
that led to all the extraordinary diversity of life on Earth.
这形成了地球上生命的多样性

Life seems to be simply
只要有适宜的环境
what matter does given the right conditions and enough time.
和充足的时间，物质似乎就能构成生命
I think that life is probably quite common throughout the universe,
我认为生命遍及整个宇宙
but that's another tale all together.
不过那是另外一个故事了
As life developed, it changed the planet on which it was born,
生命在演替的同时，也改变着孕育它的星球
altering the very fabric of the Earth.
改变着地球特有的构造
After four and a half billion years, the human race arrived on the scene.
45亿年后，人类登场了
But one thing often troubles people when they hear this story.
但人们听这故事时，常常被一个问题困扰
How could such an astounding chain of events
一系列导致我们出现的事件
which resulted in us be an accident?
怎会仅出于偶然
Perhaps science has revealed there is some higher authority at work,
或许科学已经揭示还有更高等的权威在运作
setting the laws of nature so that our universe and we can exist.
制定自然法则，使宇宙和我们得以存在
On the face of it,
乍看起来
life does seem to be too unlikely to be just a coincidence.
生命的出现不太可能是巧合
Think about it.
仔细想想
The Earth lies at exactly the right distance
地球恰好与太阳距离适当
from the sun to allow liquid water to exist on its surface.
使地表能够存在液态水
And the sun just happens to be the right size
而太阳也恰好大小适中
to burn for billions of years long enough for life to have evolved.
足以燃烧数十亿年，足够生命得以进化
The solar system is littered with all the elements needed for life.
太阳系中充满生命所需的所有元素
These elements themselves are only possible
只有古老恒星消亡
because of older stars that have burned out.
这些元素才能产生
These older stars only existed
而只因为早期原始气团的微不均匀
because of a tiny unevenness in the early primordial gas,
这些古老恒星才能存在
that was itself produced by a one in a billion imbalance
它自身源于大爆炸产生的粒子海洋中
in the sea of particles that came from the Big Bang.
十亿分之一的不平衡

视频及简介

《与霍金一起了解宇宙》纪录片耗时3年多制作，期间霍金曾多次坚持对剧本作大幅修改。霍金指出外星生物在消耗尽自己星球上的资源后便会乘坐大型飞船到他们能够到达的星球掠夺资源，并将那里开拓成为他们的殖民地；如果有外星生物到访地球，那将会像当年意大利航海家哥伦布登陆美洲大陆一样，最后给人类带来毁灭性的灾难。